He said: “It appears that accurate information has been passed down from people to people.

“It appears that the charts must have originated with a people unknown and they were passed on, perhaps by the Minoans and the Phoenicians, who were, for a thousand years and more, the greatest sailors of the ancient world.”

Another more bizarre theory is that aliens collaborated with early humans to draw up an accurate map of the world.

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TRAILBLAZER: Captain Cook officially discovered Antarctica

Notable People That Have Seen UFOs or Know of Their Existence

According to these celebrities, aliens and UFOs are among us.

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William Shatner: is a UFO believer, saying, 'There is no doubt that there is life out there; the mathematics of it lead you to that absolute conclusion. In my mind, there is no doubt that the universe teems - with life in all its form'

Swiss author Erich von Daniken suggests that aliens captured aerial images from space and passed them on to humans.